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Interesting, now how I can run Twig lowercase function for shortcodes

my use case, the shortcode I am using return the value in upper case.

I am trying to convert it to lower case, but gives me error. Here is my attempt

My shortcode is: [shortcode x="yr3"]

My attempt to convert to lower case:
{{ [shortcode x="yr3"] | lower}}
https://twig.symfony.com/doc/2.x/filters/lower.html

in PHP, It can be done by strtolower
like
<?php echo strtolower(do_shortcode('[shortcode x="yr3"]' ));?>

Thanks

thank you very much, i will try

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